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Title
  • ja 外観上正常なサケ，カラフトマス及びサクラマス成熟親魚の Aeromonas salmonicida 保有状況
  • en Prevalence of Aeromonas salmonicida in the chum salmon (Oncorhynchus keta), pink salmon (O. gorbuscha), and masu salmon (O. masou) returning to rivers in Hokkaido
Creator
    • ja 野村, 哲一 en Nomura, Tetsuichi
Accessrights open access
Subject
  • NDC 663
Description
  • Abstract en Prevalence of Aeromonas salmonicida was studied in mature chum (Oncorhynchus keta), pink (O. gorbuscha), and masu salmon (O. musou) without signs of furunculosis. From September 1979 to November 1990, a total of 15,264 chum, pink and masu salmon were collected from 33 rivers. We isolated A. salmonicida from chum salmon in 18 of 28 rivers and the prevalence ranged from 1.8 to 34.4%. For pink salmon populations, A. salmonicida was isolated in 9 of 14 rivers with prevalence ranging from 1.7 to 14.6%. In masu salmon, A . salmonicida was isolated in 6 of 10 rivers and the prevalence ranged from 0.5 to 3.7%. The above results indicated that A. salmonicida distributed widely in the populations of mature salmonids, except those in the rivers on the coast from Tsugaru Strait to Uchiura Bay. The annual change in prevalence of A. salmonicida in salmon was closely related to the fish density in the holding ponds for maturation. The viable numbers of A. salmonicida in the kidney were found to be from 10^3 to 10^5 cfu/g.
Publisher ja 日本魚病学会 en Japanese Society of Fish Pathology
Date
    Issued1991-09
Language
  • jpn
Resource Type journal article
Version Type VoR
Identifier HDL http://hdl.handle.net/2115/38334
Journal
    • PISSN 0388-788X
    • NCID AN00063165
      • ja 魚病研究 en Fish pathology
      • Volume Number26 Issue Number3 Page Start139 Page End147
File
Oaidate 2023-07-26